Introduction to Engineering
Section Views - 1
Agenda
Why section views are needed
Types of section views
Reference
 Bertoline, Chapter 3, Sections 3.1-3.4
Section Views
Section views are used when
important hidden details are
in the interior of an object.
These details appear as
hidden lines in one of the
orthographic principal views;
therefore, their shapes are
not very well described by
pure orthographic projection.
Types Of Section Views
Full sections
Half sections
Offset sections
Broken-out sections
Revolved sections
Removed sections
Cutting Plane
 Section views show how an object would look if a
cutting plane (or saw) cut through the object and
the material in front of the cutting plane is removed
Figure 3.3
Section Lines
Section lines (crosshatching) are used to
show where the cutting plane passed
through solid material
Figure 3.9
Section Lines
Section lines can
be used to show
different types of
materials or different
parts of the same
material.
Refer to text for a complete
list (Figure 3.8)
Full Section View
In a full section
view, the cutting
plane cuts across
the entire object
Note that hidden
lines become
visible in a section
view
Full Section View
Show cutting plane in the top view
Make a full section on the front view
Full Section View
Note how the cutting
plane is drawn and how
the crosshatching lines
mark the surfaces of
material cut by the
cutting plane.
No hidden lines on the
section view, if possible.
Note: Interior lines
behind cutting plane
became visible.
Half Section View
The cutting
planes do not cut
all the way
through to the
object. They cut
only half way,
stopping at the
centerline.
Half Section View
Half Section used
mainly for
symmetric objects
Video #17
Drawing Full and Half Sections
Assignment #32:
Full & Half Sections Handout
Read Bertoline, Chapter #3, Sections 3.13.4
Assignment #32 (Start in Class)
Follow the instructions to make full and half
section views on the handout provided.
On a piece of isometric grid paper, draw an
isometric view of a full section of the object in
Assignment #32.